Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666314 | Semiconductor memory device for selecting and deselecting blocks of word lines | Takao Akaogi, Nobuaki Takashina, Yasushi Kasa, Kiyoshi Itano, Minoru Yamashita | 1997-09-09 |
| 5631597 | Negative voltage circuit for a flash memory | Takao Akaogi, Tetsuji Takeguchi, Ryoji Hagiwara, Yasushi Kasa, Kiyoshi Itano +2 more | 1997-05-20 |
| 5608670 | Flash memory with improved erasability and its circuitry | Takao Akaogi, Tetsuji Takeguchi, Ryoji Hagiwara, Yasushi Kasa, Kiyoshi Itano +2 more | 1997-03-04 |
| 5592419 | Flash memory with improved erasability and its circuitry | Takao Akaogi, Tetsuji Takeguchi, Ryoji Hagiwara, Yasushi Kasa, Kiyoshi Itano +2 more | 1997-01-07 |